Quote:
Originally Posted by DoomsdayJesus
I have a ton of 0W-40 left over from my BMW that I was going to take back to the store, would it be a sin to use it in my BRZ when I change the oil at 1000 miles?
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Unless you have a built engine, I would only use one or two quarts at a time with the remainder 0W-20 to make a robust 30 weight oil. Otherwise, just take it back for some 0W-20 or 5W-20 or keep it for a couple more years and mix it with 0W-16.
This is why I never hoard oil.
-Dennis